[PYTHON/DATETIME] 특정 주차(Week Number)의 마지막 날짜 구하기

import datetime

def GetWeekNumberLastDate(year, weekNumber):
    yearFirstDate = datetime.datetime(year, 1, 1)
    currentDate   = yearFirstDate + datetime.timedelta(weeks = weekNumber - 1)
    targetDate    = currentDate - datetime.timedelta(days = currentDate.isoweekday() % 7 - 7)
    return targetDate

if __name__ == "__main__":
    print(GetWeekNumberLastDate(2019, 1)) # 2019-01-06 00:00:00
    print(GetWeekNumberLastDate(2019, 2)) # 2019-01-13 00:00:00
    print(GetWeekNumberLastDate(2019, 3)) # 2019-01-20 00:00:00
    print(GetWeekNumberLastDate(2019, 4)) # 2019-01-27 00:00:00
    print(GetWeekNumberLastDate(2019, 5)) # 2019-02-03 00:00:00
    print(GetWeekNumberLastDate(2019, 6)) # 2019-02-10 00:00:00